sand:沙
例句:Sift gold from sand. 沙里掏金。
pail:桶
例句:He kicked over the pail through carelessness. 他不小心把桶踢翻了。
shovel:铁铲
例句:He jammed his shovel into the sandy soil. 他使劲把铲子插进沙土。
shell:动物的壳
例句:The snail retreated into its shell. 蜗牛缩进壳里去了。
sand castle:沙堡